T mobile Hacked, how did they find out? the Public told them. The Worst possible way to find out you were hacked. Your system were breached so well you didn't even notice the hack.
If you haven't signed up for Identity monitoring software, time to do it. Odds are your information has been hacked from 1 of 1000's of companies that been hacked in the past.
Vice First Reported the hack, read more at https://www.vice.com/en/article/akg8wg/tmobile-investigating-customer-data-breach-100-million
Read more at Woods LLP